. Prevention, evaluation, and treatment of children, teenagers and adults with symptomatology of stuttering in Spanish and English . Delayed language and early language stimulation . Parents and teachers orientation and follow up. . Lecturer and/or instructor in several courses, seminars, symposiums and meetings since 1981. . Participation in several courses related to the field since 1981, Venezuela . Founder and Director/Chief of CETEL - Consulta Especializada de Terapìa del Lenguaje (Speech and Language Clinic), Otorhinolaryngology Service, Children’s Hospital J.M. De Los Rios, Caracas, Venezuela 1975-2009. . Coordinator of the Pediatric, Otorhinolaryngologist, and Psychiatry Post Graduate students program on normal and pathological speech, voice and language, at the Children Hospital, 1982-2009 . Venezuelan Association of Stuttering, Vice-President, since 2012